SH7052 datasheet(617/919 Pages) RENESAS

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Section 17 Advanced User Debugger (AUD)

17.1

Overview

The SH7052F/SH7053F/SH7054F has an on-chip advanced user debugger (AUD). Use of the

AUD simplifies the construction of a simple emulator, with functions such as acquisition of

branch trace data and monitoring/tuning of on-chip RAM data.

17.1.1

Features

The AUD has the following features:

• Eight input/output pins

 Data bus (AUDATA3 to AUDATA0)

 AUD reset (AUDRST)

 AUD sync signal (AUDSYNC)

 AUD clock (AUDCK)

 AUD mode (AUDMD)

• Two modes

Branch trace mode or RAM monitor mode can be selected by switching AUDMD.

 Branch trace mode

When the PC branches on execution of a branch instruction or generation of an interrupt in

the user program , the branch is detected by the AUD and the branch destination address is

output from AUDATA. The address is compared with the previously output address, and

4-, 8-, 16-, or 32-bit output is selected automatically according to the upper address

matching status.

 RAM monitor mode

When an address is written to AUDATA from off-chip, the data corresponding to that

address is output. If an address and data are written to AUDATA, the data is transferred to

that address.

SH7052 Datasheet(PDF) 617 Page - Renesas Technology Corp